Use this set after Test 1 when you want another mixed CDL score check without repeating the same questions.
This second general knowledge set keeps the same broad CDL foundation but uses a different question mix so missed patterns are easier to spot.
Look for clues about space, speed, visibility, inspections, and cargo responsibility.
Treat scenario questions as driving decisions, not just handbook recall.
Use missed-answer explanations to choose a focused weak-area review.
When this pattern appears in a missed answer, review the explanation before trying another set.
When this pattern appears in a missed answer, review the explanation before trying another set.
When this pattern appears in a missed answer, review the explanation before trying another set.
When this pattern appears in a missed answer, review the explanation before trying another set.
When this pattern appears in a missed answer, review the explanation before trying another set.
At night, your visibility is limited to the reach of your headlights. You must adjust your speed so you can safely stop within that visible distance.
Study focusUse inspection habits to catch unsafe defects before driving.
Common trapChecking only obvious items and missing brake, tire, coupling, or defect-report steps.
While avoiding fines is good, safety is the primary reason for inspections. A defect found during an inspection can prevent a breakdown or fatal crash.
Study focusUse inspection habits to catch unsafe defects before driving.
Common trapChecking only obvious items and missing brake, tire, coupling, or defect-report steps.
Federal regulations require that emergency warning devices (like reflective triangles) be placed within 10 minutes of stopping on the shoulder or traveled portion of the road.
Study focusRespond safely to hazards, emergencies, traction loss, and unsafe conditions.
Common trapReacting late or using sudden braking/steering when controlled action is safer.
To recover from hydroplaning, release the accelerator and push in the clutch. Do not use the brakes, as this can cause the wheels to lock and result in a skid.
Study focusRespond safely to hazards, emergencies, traction loss, and unsafe conditions.
Common trapReacting late or using sudden braking/steering when controlled action is safer.
Following too closely (tailgating) severely reduces your reaction time and stopping distance, making it a leading cause of crashes.
Study focusUnderstand state-specific CDL requirements, handbook notes, and licensing context.
Common trapUsing generic CDL knowledge without checking state-specific requirements.
Black ice is a thin layer of clear ice. Because it is clear, you can see the dark asphalt underneath, making the road appear wet rather than icy.
Study focusRespond safely to hazards, emergencies, traction loss, and unsafe conditions.
Common trapReacting late or using sudden braking/steering when controlled action is safer.
You should check your mirrors regularly (about every 5 to 8 seconds) to be aware of traffic around you and to monitor your vehicle and trailer.
Study focusChoose safe speed, spacing, and visual search habits for commercial vehicles.
Common trapDriving at passenger-car speeds without accounting for weight, space, weather, or grade.
Speeding or driving too fast for conditions is the leading cause of fatal crashes involving large trucks.
Study focusChoose safe speed, spacing, and visual search habits for commercial vehicles.
Common trapDriving at passenger-car speeds without accounting for weight, space, weather, or grade.
The rule is 1 second per 10 feet of length, plus 1 second if going over 40 mph. For a 60-foot truck, that is 6 seconds + 1 second = 7 seconds.
Study focusChoose safe speed, spacing, and visual search habits for commercial vehicles.
Common trapDriving at passenger-car speeds without accounting for weight, space, weather, or grade.
To deal with an aggressive driver, do not engage. Get out of their way, avoid eye contact, ignore gestures, and report them if they are a severe danger.
Study focusChoose safe speed, spacing, and visual search habits for commercial vehicles.
Common trapDriving at passenger-car speeds without accounting for weight, space, weather, or grade.
Water can be used to cool down a tire fire. Using water on electrical, gasoline, or grease fires can spread the fire or cause electrocution.
Study focusApply safe loading, separation, parking, routing, and emergency-response decisions for hazmat.
Common trapChoosing a convenient action instead of the action that protects people and isolates the hazard.
If the drive wheels lose traction due to over-acceleration or slippery roads, the tractor can spin out, potentially causing a jackknife.
Study focusControl off-tracking, rollover, rearward amplification, and trailer movement risks.
Common trapTurning or steering too sharply without accounting for trailer movement.
Loading heavy cargo high in the trailer raises the center of gravity, making the vehicle top-heavy and much more likely to roll over in a curve or evasive maneuver.
Study focusApply safe loading, separation, parking, routing, and emergency-response decisions for hazmat.
Common trapChoosing a convenient action instead of the action that protects people and isolates the hazard.
The 'snubbing' technique involves braking firmly to 5 mph below your safe speed, then releasing them to allow cooling, repeating as necessary while the engine brake does most of the work.
Study focusChoose safe speed, spacing, and visual search habits for commercial vehicles.
Common trapDriving at passenger-car speeds without accounting for weight, space, weather, or grade.
Empty trucks lack the weight to press the tires firmly against the road. When heavy-duty brakes are applied, the tires easily lock up, reducing traction and increasing stopping distance.
Study focusUnderstand cargo weight, securement, and load safety responsibilities.
Common trapAssuming cargo safety is only the shipper or dispatcher responsibility.
Backing toward the driver's side (sight-side backing) allows you to see the path of the trailer directly out your window, rather than relying solely on mirrors for the blind side.
Study focusUse safe backing, turning, and basic-control habits.
Common trapBacking without a helper or failing to stop when visibility is uncertain.
A red triangle with an orange center on the rear of a vehicle indicates it is a slow-moving vehicle, such as a tractor or construction equipment, moving at 25 mph or less.
Study focusApply safe loading, separation, parking, routing, and emergency-response decisions for hazmat.
Common trapChoosing a convenient action instead of the action that protects people and isolates the hazard.
Mountain driving puts extreme stress on brakes. You must ensure your brakes are in perfect condition and know the route, including the location of runaway truck ramps.
Study focusApply safe loading, separation, parking, routing, and emergency-response decisions for hazmat.
Common trapChoosing a convenient action instead of the action that protects people and isolates the hazard.
You should NEVER move a severely injured person unless they are in immediate danger (like a burning vehicle). Moving them can worsen spinal or internal injuries.
Study focusApply safe loading, separation, parking, routing, and emergency-response decisions for hazmat.
Common trapChoosing a convenient action instead of the action that protects people and isolates the hazard.
Mirrors and antennas are exposed to the cold air and will freeze before the road surface. If ice forms on them, be prepared for black ice on the road.
Study focusChoose safe speed, spacing, and visual search habits for commercial vehicles.
Common trapDriving at passenger-car speeds without accounting for weight, space, weather, or grade.